Samsung Multifunction Printer Error Code #02-001

The Samsung #02-001 error code indicates a fuser low heat condition. The fuser assembly is responsible for applying heat and pressure to bond toner particles permanently onto the paper. When the printer's control board detects that the fuser temperature fails to reach its required warm-up threshold, remains too low during the warm-up cycle, or drops below the target operating temperature for more than 10 consecutive seconds during ready or print mode, the machine halts operation and throws this error to prevent damage and ensure print quality.

The thermostat within the fuser assembly is the primary suspect in this fault. The thermostat monitors fuser temperature and acts as both a safety cutout and a feedback device. If it becomes defective, it may read incorrectly low temperatures even when the heating element is functioning, or it may have opened its circuit entirely, cutting power to the heating lamp. A failed heating lamp, poor electrical connections to the fuser, or a faulty thermistor can produce identical symptoms by starving the fuser of the power or feedback it needs to maintain temperature.

In some cases, the issue originates upstream of the fuser itself. A degraded power supply board may fail to deliver adequate voltage to the fuser lamp, resulting in insufficient heat generation. Wiring harness damage or loose connectors between the control board and fuser unit can also introduce resistance that disrupts temperature regulation. Because the error triggers after only 10 seconds below target temperature during operation, even intermittent connection problems will reliably reproduce the fault under normal printing conditions.